Why choose to be one superhero when you can be 10? Ben Tennyson is living every kid's dream in this animated series when he finds a strange, watch-like gadget called the Omnitrix. With the help of its powers, Ben can turn into any one of 10 different aliens--including a ghost, a man made of fire, and a furry monster. Though Ben uses the watch for good, he also uses it to have a little devious fun, too. This collection presents every episode of the show's fourth season.